Hair iron



FIG. 1 is a top, left side and front perspective view of a hair iron showing the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front end view thereof;

FIG. 5 is a rear end view thereof;

FIG. 6 is a right side elevation view thereof, the left side being a mirror image of the right side; and,

FIG. 7 is a detailed view of a portion of the front end.

The front end portion is shown separately for convenience of illustration.

The broken lines shown in the drawings illustrate portions of the article and form no part of the claimed design. 

We claim the ornamental design for a hair iron, as shown and described. 